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Home >> GMC >> 2002 >> C3500 HD 6.5 F, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - 6.5L >> Repair Instructions >> Powertrain Control Module (PCM) Programming >> PCM Programming
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PCM Programming

  1. Verify the following for the setup:
    • The battery is charged.
    • The ignition is ON.
    • The battery/cigarette lighter connection is secure.
    • The data link connector (DLC) is attached.
  2. Perform the programming. Refer to the up to date Techline terminal/equipment for user instructions.
  3. Perform the Passlock Learn Procedure. Refer to PROGRAMMING THEFT DETERRENT SYSTEM COMPONENTS .
  4. After the vehicle has been programed, operate the vehicle until the coolant temperature is more than 77°C (170°F). This will allow the top dead center (TDC) offset to be programed. Refer to Programming the TDC Offset  below.
  5. Check the Data list for a TDC offset.
  6. If the PCM fails to reprogram, do the following:
    • Check all the powertrain control module (PCM) connections.
    • Check the Techline terminal/equipment for the latest software version.
    • Try again to reprogram the PCM. If the PCM fails again, replace the PCM. Refer to Powertrain Control Module (PCM) Replacement .
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